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MESOSCALE DISCUSSION 1905
NWS STORM PREDICTION CENTER NORMAN OK
0545 PM CDT THU SEP 06 2012
AREAS AFFECTED...S-CNTRL NY AND NE PA
CONCERNING...SEVERE THUNDERSTORM WATCH 626...
VALID 062245Z - 062345Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 626
CONTINUES.
SUMMARY...ISOLATED SEVERE HAIL MAY CONTINUE ANOTHER HOUR OR SO AS
STORMS VERY SLOWLY TRACK E/SEWD. A DOWNWARD TREND IN SEVERE THREAT
IS EXPECTED DUE TO LOSS OF DAYTIME HEATING AND LACK OF ORGANIZATION.
A NEW WW IS NOT EXPECTED DOWNSTREAM OF WW 626.
DISCUSSION...ISOLATED SEVERE HAIL WILL CONTINUE TO BE POSSIBLE OVER
THE NEXT HOUR OR TWO. STORM INTENSITY HAS GENERALLY DECREASED OVER
THE LAST 30 MINUTES AND STORMS CONTINUE TO BE UNORGANIZED DUE TO
WEAK DEEP LAYER SHEAR. WHILE CONVECTION HAS DEVELOPED IN WEAK LOW
LEVEL CONVERGENCE ACROSS SFC FRONT...THE LOSS OF DAYTIME
HEATING/INCREASING LOW LEVEL STABILITY COUPLED WITH WEAK UPPER LEVEL
FORCING SHOULD RESULT IN DECREASING SEVERE THREAT SOON AFTER SUNSET.
A NEW WW DOWNSTREAM OF WW 626 IS NOT ANTICIPATED.
..LEITMAN.. 09/06/2012
ATTN...WFO...OKX...ALY...PHI...BGM...CTP...
LAT...LON 43167405 41427464 40717643 40777717 41187751 41957742
42507704 43167405
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